Mold



MOLD

" Filed'May 10, 1927 nvvguro'n WILLIAM GlLss WHITING ATTORNEYS Patented Nov; 27, 1928.

Ltd-2,913

'WILLIAIVI GILES VVHI'ITING, OF VANCOUVER,

BRITISH COIIUIVIBIA, CANADA.

MOLD.

4 Application filed May 18,

My invention relates to improvements in molds which are particularly adapted for use in the manufacturing of artificial stone and the like, and having for its object the provision of means whereby the side walls of the mold may no brought to their intended closing with accuracy and expedition and be held in such position throughout the filling, tamping and screeding process and also during the turning of the mold and the block therein.

The invention consists essentially of a plurality of side walls which arev adapted to be connected together and placed upon a pallet, said side walls being fitted adjacent opposite ends with connecting lugs which project from the face of the wall at an angle equal to one half of the angle formed by the intersecting ends of adjoining walls, and means for drawing the lugs towards each other, as will be more fully described in, the following specification, in which Fig. 1 is a plan view of the invention showing one side wall in detached position.

Fig. 2 is a side view showing a part in section with all side walls in closed position.

In the drawings like characters of reference indicate corresponding parts in each figure.

The numeral 1 indicates generally a pallet which is preferably made with a wood base 2 having a bed plate 3 secured thereto by lugs 4 embedded into the base 2, which lugs have their upper surfaces flush with the upper surfaces of the base, so as to serve not only as a fastening means for the bed plate to the base, but to form a seat for the side walls of the mold. The bed plate 3 projects slightly above the upper surface of the base 2 as at 5, see Figure 2, thus forming a vertical marginal edge, the purpose of which will hereinafter appear.

The numerals 6 and 7 indicate generally pairs of .side walls which are preferably formed of channel iron, the plane surfaces of which are adapted to abut the marginal edges of the bed plate 3. The ends of the side walls 7 are cut away at opposite ends to form rebates 8 into which the corresponding ends of the side walls 6 are adapted to be housed when the mold is in closed position. At opposite ends of the side walls 7 hinge lugs 9 are secured, which lugs in a rectangular mold are offset at an angle of 45 degrees from the face of the side wall as at 10 and are provided with a hingingly mounted belt 11 hav- 1927. Serial No 190,289.

ing an elongated hand nut 12. At opposite ends of the side walls 6 similarly offset lugs 13 are provided which are slot-ted at their ofiiset ends as'at 1 lfor the purpose of receiving the bolts 11 of the lugs 9. Centrally mounted on the outside of each of the side walls 6 is a trunnion 15 adapted to be journalle'd in a suitable bale and which jointly form an axis about which the mold may be turned.

' While it is preferred to use a pallet having a projecting bed plate such as is shown, a pallet having its entire upper surface in a single plane may be used with equal success in the formation of blocks not requiring a high face finish or fine arrises.

Having thus described the several parts of my invention 1 will now briefly explain its use. d

When a plain base is used, the side walls 6 and 7 are placed injuxtaposition and the bolts 11 are swung into the slots 14: of the lugs 13 and the nuts 12 screwed up thereupon, thus causing the ends of the adjoining side walls to be drawn together to form a right angle, since the offset of the adjacent lugsis at an angle of l5 degrees from the internal faces of the side walls, an equal strain is imparted by the bolts 11 and their nuts 12 to adjoining ends of the side walls so that the resulting angle of contact of such ends is constant and a truly formed mold results. If a base such as is described is used, the side walls 6 and 7 are set up against the marginal edges 5 of the bed plate 3, when they are secured in posit-ion in the manner above described.

Subsequent to the filling of the mold with aggregate and the tamping and sci-ceding thereof, a further pallet is usually laid on the top of the mold and clamps applied to hold the pallets together, when a suitable bale may be connected to the trunnions l5 and the entire mold swung about its axis so as to reverse its position to enable the pallet and the side walls 6 and 7 of the mold to be removed ready for re-use.

hat I claim as my invention is:

A mold for artificial stone and the like including a plurality of side walls adapted to be assembled in rectangular formation, and means for securing said walls together comprising a pair of horizontally extending lug plates attached to the outer surface of each wall adjacent opposite ends of the wall, the outer end of each lug plate being offset from the face of the Wall at an angle equal to the remaining lug plates and adapted to be half the angle of the intersection of adjoinengaged in said slots and nuts mounted on ing side walls and being projected beyond said bolts. 7

the adjacent end of the Wall to which said lug Dated 'at Vancouver, B. 0., this 23rd day 5 plate is attached, the ofiset ends of certain of of April, 1927.

said lug plates having slots formed therein,

bolts hingedly secured to the oflset ends of WILLIAM GILES WHITING. I 

